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1968년 ~ 2023년까지 1,187 건의 한국천문학회지를 격월간 확인하실 수 있습니다.
- The Korean Astronomical Society (The Korean Astronomical Society)
- 계간 (Quarterly)
- ISSN : 1225-4614 (ISSN : 1225-4614)
1225-4614
- DB구축현황 : 1,187건 (DB Construction : 1,187 Articles)
총 게시글 1,187건
페이지 90/119
891
- KHOSROSHAHI H. G.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.277-278
- 1996
- 원문 바로보기
In attempts to detect gravitational waves, the response of some celestial systems such as the earth[l] or binary systems[2] to such waves have been investigated. Following this line of thought, here we study the possibility of excitation of the oscillation modes of a polytropic star by gravitational radiation and calculate the relevant absorption cross sections.
892
- LIN GUAN-QING
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.401-402
- 1996
- 원문 바로보기
893
- TOVMASSIAN H. M.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.149-150
- 1996
- 원문 바로보기
The results of observations of a dozen OB stellar associations made with the ultraviolet space telescope Glazar is presented.
894
- Qu Z. Q.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.307-308
- 1996
- 원문 바로보기
895
- Hul F. X.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.53-54
- 1996
- 원문 바로보기
Based on the database of 128 disk galaxies (66 SO, 62 S and Irr) mailnly compiled from Kent and Gunn (1982) and Doi et a1.(1995) which is complete down to m < 15.6 mag within a radius of <TEX>$3^{\circ}$</TEX>, the orientation of spin vectors of disk galaxies of the Coma cluster has been analyzed. The results confirm the morphological dependence of the orientation of disk galaxies found from the analsis of the Virgo cluster. Common features of orientation of disk galaxies of both clusters are outlined.
896
- WANG JIA LONG
- Journal of the Korean astronomical society = 천문학회지
- 29, n.2
- pp.217-221
- 1996
- 원문 바로보기
We have examined morphological change and movements of individual sunspots within a sunspot group in association with a large solar flare activity (3B/X1.5) appeared on 13 May 1981. For this purpose we measured distance among spots during the period before and after the flare activity and estimated the average velocity of their movement. Our main results are as follows: (1) The longitudinal displacement among sunspots are generally greater than the latitudinal displacement. (2) During the period the spots moved with an average velocity of 1.2 km/s in longitude and 0.86 km/s in latitude. (3) The most notable change took place in the central part placed between the two ribbons of the flare.
897
- MESZAROS A.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.43-43
- 1996
- 원문 바로보기
898
- BYUN YONG-IK
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.125-126
- 1996
- 원문 바로보기
Beijing-Arizona-Taipei-Connecticut (BATC) survey is a long term project to map the spectral energy distribution of various objects using 15 intermediate band filters and aims to cover about 450 sq degrees of northern sky. The SED information, combined with image structure information, is used to classify objects into several stellar and galaxy categories as well as QSO candidates. In this paper, we present a preliminary setup of robust data reduction procedure recently developed at NCU and also briefly discuss general classification scheme: redshift estimate, and automatic detection of variable objects.
899
- MOON Y-J.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.323-324
- 1996
- 원문 바로보기
In the present work we introduce a new flare activity indicator, MAD and examine its characteristics by analyzing a set of successive three days' observations of a typical active region, AR2372. The computed MAD is compared with conventional activity indicator such as separator. It is found that. (1) MAD traces very well the separator, (2) it. singles out. local discontinuity of magnetic field lines and (3) it. is a good measure of describing the evolutionary status of active region.
900
- HEILES CARL
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.151-154
- 1996
- 원문 바로보기
We examine the observations of large-scale magnetic fields in the Universe. We begin at the largest scale with clusters of galaxies and work our way down through galaxies and finally to the Milky Way. on which we concentrate in detail. We examine the observations of the Galactic magnetic field, and their interpretation, under the philosophy that the Galactic magnetic field is like that in other spiral galaxies. We use pulsar data. diffuse Galactic synchrotron emission, and starlight polarization data to discuss the Galaxy's global magnetic configuration and the uniform (<TEX>$B_u$</TEX>), random (<TEX>$B_r$</TEX>), and total (<TEX>$B_t$</TEX>) components of the field strength. We find disagreement among conclusions derived from the various data sets and argue that the pulsar data are not the best indicator for large-scale Galactic field. Near the Solar circle, we find that the azimuthal average of <TEX>$B_t$</TEX> is 4.2<TEX>$\mu$</TEX>G and we adopt <TEX>$B_u\~$</TEX>2.2 and <TEX>$B_r\~3.6{\mu}G$</TEX>. <TEX>$B_t$</TEX> is higher in spiral arms, reaching <TEX>$\~5.9{\mu}G$</TEX>. <TEX>$B_t$</TEX> is higher for smaller <TEX>$R_{Gal}$</TEX>, reaching <TEX>$\~8.0{\mu}G$</TEX> for <TEX>$R_{Gal}$</TEX> = 4.0 kpc. The pattern of field lines is not concentric circles but spirals. The inclination of the magnetic spiral may be smaller than that of the Galaxy's spiral arms if our sample, which refers primarily to the interarm region near the Sun, is representative. However, it is not inconceivable that the local field lines follow the Galaxy's spiral pattern, as is observed in external galaxies.